In an ideal inductor that has no resistance or capacitance, as the current increases energy flows into the inductor and is stored there within its magnetic field without loss, it is not released until the current decreases and the magnetic field collapses.
On the short scale, there are 12 zeros in a trillion (1012). It is 1,000,000,000,000. The traditional long scale, still used in many areas of the world, advances number names by millions, with intermediate names for the thousands (milliard, billiard, trilliard).
There are nine zeros in a billion - 1,000,000,000 - in all major variants of English. In British English there used to be a dominant meaning of 12 zeros - 1,000,000,000,000. This has not been the dominant meaning for at least 50 years, and it would be absurd to use that meaning now, even in the most old-fashioned of linguistic contexts.